A method for determination of one hundred endogenous steroids in human serum by gas chromatography-tandem mass spectrometry

Steroid profiling helps various pathologies to be rapidly diagnosed. Results from analyses investigating steroidogenic pathways may be used as a tool for uncovering pathology causations and proposals of new therapeutic approaches. The purpose of this study was to address still underutilized application of the advanced GC-MS/MS platform for the multicomponent quantification of endogenous steroids. We developed and validated a GC-MS/MS method for the quantification of 58 unconjugated steroids and 42 polar conjugates of steroids (after hydrolysis) in human blood. The present method was validated not only for blood of men and non-pregnant women but also for blood of pregnant women and for mixed umbilical cord blood. The spectrum of analytes includes common hormones operating via nuclear receptors as well as other bioactive substances like immunomodulatory and neuroactive steroids. Our present results are comparable with those from our previously published GC-MS method as well as the results of others. The present method was extended for corticoids and 17alpha-hydroxylated 5alpha/ß-reduced pregnanes, which are useful for the investigation of alternative "backdoor" pathway. When comparing the analytical characteristics of the present and previous method, the first exhibit by far higher selectivity, and generally higher sensitivity and better precision particularly for 17alpha-hydroxysteroids.

Cervical cerclage - history and contemporary use

OBJECTIVE

Contemporary role of cerclage as a preterm birth treatment.

DESIGN

Review article.

SETTING

Department of Obstetrics and Gynecology of the First Faculty of Medicine and General Teaching Hospital in Prague.

METHODS

Research of existing literature, predominantly foreign journal articles, but also Czech literature and personal experience with the method.

RESULTS

Cerclage is one of the well-known surgical procedures carried out during pregnancy. Its aim is to provide a mechanical support to the cervical canal and to keep the cervix closed. The cervical mucous plug serves as a mechanical barrier between the vagina and the uterine cavity, but it also contains many immune components which protect the fetal compartment from ascendent infections. Application of a cervical stitch can help to retain the mucous plug and thus increases the immunity of the cervical canal. Results of 15 randomised studies (Cochraine Database of Systematic R) suggest that in women with increased risk of preterm birth, cerclage decreases the occurrence of preterm birth relative to the expectant management.

CONCLUSIONS

Despite the decreasing numbers of cerclage surgeries, it is still a useful method of preterm birth prevention for a specific group of women. More recently, a progesterone treatment has gained popularity. Its application, however, must begin before the 16th week of pregnancy.

May circulating steroids reveal a predisposition to intrahepatic cholestasis of pregnancy in non-pregnant women?

Intrahepatic cholestasis of pregnancy (ICP) is a frequent liver disorder, mostly occurring in the third trimester. ICP is not harmful to the mothers but threatens the fetus. The authors evaluated steroid alterations in maternal and mixed umbilical blood to elucidate their role in the ICP development. Ten women with ICP were included in the study. Steroids in the maternal blood were measured by Gas Chromatography-Mass Spectrometry (GC-MS) (n=58) and RIA (n=5) at the diagnosis of ICP, labor, day 5 postpartum, week 3 postpartum and week 6 postpartum. The results were evaluated by ANOVA consisting of the subject factor, between subject factors ICP, gestational age at the diagnosis of ICP and gestational age at labor, within-subject factor Stage and ICP × Stage interaction. The 17 controls were firstly examined in the week 36 of gestation. ICP patients showed reduced CYP17A1 activity in the C17,20 lyase step thus shifting the balance between the toxic conjugated pregnanediols and harmless sulfated 5alpha/beta-reduced-17-oxo C19 steroids. Hence, more toxic metabolites originating in maternal liver from the placental pregnanes may penetrate backward to the fetal circulation. As these alterations persist in puerperium, the circulating steroids could be potentially used for predicting the predisposition to ICP even before next pregnancy.

[Peripartal life-threatening hemorrhage - interdisciplinary consensus opinion]

22 experts from the fields of gynecology and obstetrics, anesthesiology and resuscitation, intensive care, hematology and transfusion medicine has developed recommendations for diagnosis and procedure for life-threatening peripartum haemorrhage, which is still one of the most common causes of maternal mortality in childbirth. This guidelines, which is valid for the Czech Republic, supported by a total of 10 professional medical societies. There are based on new knowledge applicable at this time and is focused mainly on eliminating the most common causes of bleeding during delivery and prevention of haemorrhagic shock.

[Atypical pain in the uterine rupture]

OBJECTIVE

To give attention to the rare complication of pregnancy.

DESIGN

Case report.

SETTINGS

Dept. of Obstetric and Gynecology, 1st Faculty of Medicine, Charles University and General Faculty Hospital Prague.

METHODS

Description of acute abdominal pain which imitated the appendicitis in case of the uterine rupture.

CONCLUSION

The uterine rupture is the rare and very dangerous complication of pregnancy. In the time of increasing number of the cesarean section and the operation on the uterine wall, we must thing on the uterine rupture.

[Acute or expectant management in premature labour with preterm premature rupture of the membranes?]

OBJECTIVE

To evaluate current knowledge about the management of preterm premature rupture of the membranes (PPROM).

DESIGN

Review article.

SETTING

Perinatological center, Department of Gynecology and Obstetrics, General Faculty Hospital and 1st Medical School of Charles University, Prague.

METHODS AND RESULTS

Expectant management in case of PPROM increases the incidence of infection/ inflammation but does not statistically increase mortality and serious morbidity of the infants. The incidence of infants morbidity corresponds with gestational age. The most serious complications occur in the lower gestational age. It is necessary to take an individual approach. The acute management increases the number of operative deliveries and respiratory distress syndrome (RDS) in the infants. The combination of RDS, extremely prematurity and hypoxia during the labour decreases the infants survival rate.

CONCLUSIONS

The prolongation of the latency period in pregnancies above 28th week does not deteriorate the neonatal mortality or morbidity.

Some aspects of perinatal and maternal mortality in Albania

OBJECTIVE

Evaluation of antenatal care, perinatal mortality, neonatal mortality, maternal mortality, number of births, the incidence of low birth weight infants in Albania.

DESIGN OF THE STUDY

Retrospective study.

SETTING

Queen Geraldine University Hospital of Tirana, Albania.

METHODS

The population of this country is estimated to be approximately 3,2 million and comprises very young people. Twenty five percent of the population is under 15 years of age and 46% is under 25 years [2]. The fertility rate in 2009 was 1.6 children per woman of childbearing age. The urban population accounts for 45% and the rural population for the remaining 55% of the total population [2]. The health care system is spread across nearly the entire territory and is classified as primary (villages and small towns), secondary (several cities) and tertiary (in the capital, University Hospital). Primary health care is provided at 2327 health care units. The chief activity of the family doctors and general practitioners working in such units are focused on providing health care for mother and children. Ten percent of the annual births are delivered at the Maternity Hospital of Tirana (tertiary care) which has 300 beds and another 40 beds particularly for premature infants. More than 50% of the high risk pregnancies from other districts are referred to the Maternity Hospital of Tirana.

RESULTS

The annual live births in Albania was in (2010) 33,856. The total perinatal mortality rate is 10,9 per 1000 live births. The total neonatal mortality rate in 2010 was 9.7 per 1000 live births. The early postnatal mortality rate was 6.1 per 1000 births. Number of maternal deaths for 100, 000 live births was 6.0 in 2010.

Pregnancy-associated plasma protein A polymorphisms in patients with risk pregnancies

Pregnant women are often threatened by hypertension, symptoms of preterm labour, hepatopathy, and other. These complications might be the consequence of genetic factors together with involvement of environmental factors. We were searching for three polymorphisms Arg654Lys, Ala678Pro and Thr686Ala in exon 5, and two polymorphisms Phe802Leu, Ser827Ser/Leu in exon 7, and for the new mutations in exons 5 and 7 of the pregnancy-associated plasma protein A gene in the studied group consisting of 203 women - 79 pregnant women in time of preterm labour, 24 pregnant women suffering from preeclampsia, and 100 healthy pregnant and non-pregnant women serving as controls. We did not find any divergence from wild-type form of these polymorphisms in any of the studied groups, which led us to the hypothesis that these polymorphisms are not associated with our studied group of Caucasian origin. However, further studies with a larger group of subjects are needed to confirm our results.

[Progesterone neuroactive metabolites in human pregnancy]

OBJECTIVE

Review of the physiological role of neuroactive and neuroprotective steroids in human pregnancy.

DESIGN

A review article.

SETTING

Gynecological-Obstetrical Clinic, 1st Medical Faculty, Charles University and General Hospital, Prague.

CONCLUSION

Human parturition is a multi-factorial process. Various mechanisms related to the onset of labor were suggested. Estrogens show accelerating increase in late pregnancy, which probably reflect the increasing activity of fetal zone of the fetal adrenal. This zone is stimulated by progressive increase of placental CRH resulting in excessive production of conjugated 3beta-hydroxy-5-en-steroids, which are transported by circulation to placenta and further metabolized to active hormones. Some progesterone metabolites probably participate in pregnancy sustaining via modulation of ligand-gated ion channels in the CNS and periphery. In this review, the question was addressed whether the catabolism of pregnancy sustaining progesterone metabolites accelerate like the estrogen formation.

[Spontaneous symphysis pubis rupture followed by intraabdominal bleeding during the vaginal delivery]

Symphysis pubis rupture is rare but life-threatening complication of vaginal delivery. Prompt diagnosis and therapy of this complication is crucial. We present a case report of a patient with a symphysis pubis rupture followed by severe intraabdominal bleeding. The therapy of symphysis pubis rupture is usually conservative according to the available sources. In the case of our patient osteosynthesis was performed with an excellent result.

[News in pathophysiology and management of preterm labour]

OBJECTIVE

To summarize available data concerning pathophysiology and management of preterm labour and their use in clinical practice.

SETTING

Department of Obstetrics and Gynecology od the First Faculty of Medicine, Charles University, and General Teaching Hospital, Prague.

DESIGN

Review article.

METHODS

Compilation od published data from scientific literature.

CONCLUSION

Birth canal infections seem to play a key role in the ethiopathogenesis of premature delivery; the related biochemical changes significantly affect perinatal morbidity and mortality. Other potential causes, particularly hormone metabolism disorders or uteroplacental ischaemia have been intensively studied. The particular pathogenetic process of premature delivery is inflammation. This process is related to both mother and fetus. Fetal inflammatory response (FIRS)--can occur without maternal response--is connected with significant increase in perinatal morbidity. FIRS is characterised by defined laboratory, histological and clinical criteria. Effective primary prevention of premature delivery does not exist at present. The sensitivity and specificity of the laboratory markers having been used so far is low. Thus, the research is focused on finding new inflammation markers to allow early identification of pregnant women at a high risk of premature delivery and fetal inflammation. The screening of women at a high risk by means of new laboratory and ultrasound tests belongs to the most important steps in secondary and tertiary prevention of premature delivery. Intensive research of potential trigger mechanisms has been carried out, including a variety of gene types, which are potentially related to the process of premature delivery. We try to exercise new informations about pathophysiology of preterm labour in prenatal care, firstly about thrombophillias and gestagens. We also use a principles of "evidence based medicine" and revalue importance of steroids, tocolytics and antibiotics.

Prenatal and perinatal management of preterm labour

New knowledge of the pathophysiology of premature birth enables us to introduce new approaches in prenatal care as well as the management of premature delivery. These apply for the patients with subclinical risk factors, particularly with thrombophilias, chronic infections or other latent chronic infections. The peri- and pre-conceptional dispensarisation of these women might help reduce the development of premature delivery. Secondary prevention with the administration of gestagens is highly important for women with anamnestic or existing risk of premature delivery. During the underlying premature delivery, it is advisable to re-evaluate the significance of the administration of antibiotics and tocolytics as well as timing of corticoid dosage in the induction of foetal lung maturity. Using new diagnostic and therapeutic methods, the aim of present premature delivery management is to prolong the duration of pregnancy to the maximum with the lowest risk of the development of foetal inflammatory response possible and, therefore, with a low risk of long-term handicaps in children.

Pathophysiology of preterm labour

A specific pathogenic process of premature delivery represents the inflammation. Birth canal infections seem to play a key role in the ethiopathogenesis of premature delivery; the related biochemical changes significantly affect perinatal morbidity and mortality. Other potential causes, particularly hormone metabolism disorders or uteroplacental ischaemia have been intensively studied. This process is related both to the mother and fetus. Fetal inflammatory response (FIRS)--can occur without maternal response--and it is related to a significant increase in perinatal morbidity. FIRS has definite laboratory, histological and clinical criteria. Effective primary prevention of premature delivery does not exist at present. The sensitivity and specificity of so far used laboratory markers is low. Thus, the research is focused on finding new inflammation markers allowing the early identification of pregnant women at a high risk of premature delivery and fetal inflammation. The screening of women at a high risk by means of new laboratory and ultrasound tests belongs to the most important steps in secondary and tertiary prevention of premature delivery. Intensive research of potential trigger mechanisms has been carried out, including a variety of gene types, which are potentially related to the process of premature delivery.

[2200 g-weight-fibroid: abdominal mymectomy in the twentieth week of pregnancy]

OBJECTIVE

To present our clinical experience with a case of myomectomy of very big myoma during the second trimestr of pregnancy and to analyse current articles with this topics. Two myomectomies in one pregnancy (in the second trimestr and during the cesarian section) are presented.

DESIGN

Review article, case report.

RESULTS

A case report of 36-years-old nulliparous woman with 2 big fibroids in pregnancy is presented. The pregnancy was troubleless until 20th week, than she was hospitalized with suddenly appeared pain in epigastrium. A big necrotisis of fibroid was found during the examination. The clinical situation of the pacient rapidly deteriorated - in 24 hours the pain increased and ileus appeared. The operation due to vital indication was carried out with maximal effort to preserve the pregnancy. The 2200g-weigh-myoma was removed abdominally and the pregnancy continued without another complication. The cesarian section was done in 38-week-old pregnancy and a healthy child was delivered. The second big fibroid on the back of the uterus was found during the cesarian section, myomectomy and large adhesiolysis was done. The pacient was hospitalized during the puerperium again with reapperance of ileus. The therapy of ileus was conservative. A case report presents a rare ocurence of big myomectomy during the second trimestr of pregnancy which was complicated by recidivans ileus due to large adhesive process in abdominal cavity.

CONCLUSION

The prevalence of fibroids in pregnancy is between 2 and 4%, only 10 procents of this pregnancies are complicated, the necrosis of fibroid during the pregnancy is one of the most difficult cases.

[Intrapartal fetal monitoring, sensitivity and specificity of methods]

OBJECTIVE

To evaluated sensitivity and specificity of presently used methods for intrapartal monitoring (CTG, FpO2 a STAN S-21) and their mutual comparison.

TYPE OF STUDY

A prospective study.

SETTING

Gynecological-Obstetrical Clinic, 1st Medical Faculty, Charles University and general Teaching Hospital, Prague.

METHOD

In 114 pregnant women with high-risk or pathological course of pregnancy the authors evaluated the capability of individual methods to predict intrapartal hypoxia, determined on the basis of postnatal evaluation of parameters observed (Apgar score in 1st minute, pH from umbilical artery, lactate levels in fetal blood, base excess (BE) and postpartum condition of fetus evaluated by a neonatologist). Each method was categorized according to its importance. The quality of individual methods was evaluated by means of their sensitivity and specificity as well as by the area under ROC (Receiver Operating Characteristic), i.e. AUC (Area under Curve). A similar or different prediction of the condition of the newborn by these individual methods was evaluated by the McNamara test of symmetry. In 50 deliveries performed by Cesarean section and 24 forceps deliveries the authors evaluated postnatal pH from umbilical artery and evaluation by Chi-square test. The women in childbed were infused with a tocolytic drug (hexoprenalin) before Cesarean section. All tests were performed at 5% level of significance.

RESULTS

Low level of Apgar score in the 1st minute and less) always indicated CTG, but also a large proportion of normal newborns. STAN, in contrast, well indicates all newborns with a normal point evaluation. The best balanced evaluation of the newborns is provided by FpO2 and there was a significant difference between CTG and FpO2. In evaluating pH from the umbilical artery (pH < 7.20), TCG proved to be most sensitive again but displayed low specificity. STAN was the best predictor of newborns with normal pH. In evaluating high levels of lactate (> 3.7mmol/L) and BE (> -10) and related demonstration of metabolic acidosis STAN proved to be the best predictor. The condition of the newborn evaluated by a neonatologist immediately after birth (medium or heavy depression) was best predicted by FpO2. In deliveries performed by Cesarean section and after the administration of tocolysis the postnatal pH was higher then in forceps deliveries without acute tocolysis. The occurrence of emergencies in the course of a pathological delivery in individual methods is as follows: CTG, FpO2 and STAN.

CONCLUSION

Even though CTG displays a very low specificity, this method should not be rejected, since it draws attention of the obstetrician very early to the possibility of developing hypoxia. FpO2 or STAN gives more precision to the situation and demarcates a correct moment for ending the delivery for the indication of fetus hypoxia intra partum. STAN is the best predictor for conditions of developing metabolic acidosis, evaluated postnatally by the level of lactate and BE in fetal blood.

[Diagnosis and management of infection and its role in preterm labor]

OBJECTIVE

Analysis of contemporary knowledge of infection and its role in etiology and pathogenesis of preterm labor.

DESIGN

Review article.

SETTING

Department of Gynecology and Obstetrics, 1st Faculty of Medicine, Charles University, Prague.

METHODS

An overview of published data.

CONCLUSION

Infection is considered the most significant cause of preterm labor. The current research tend towards searching for local cervicovaginal markers of infection. An important role in the prenatal care is played by cervical ultrasonography which together with cervicovaginal markers can sort out the group of women with high risk of the preterm labor. Cervicovaginal markers can reveal microbial invasion into higher parts of the birth canals during the intrapartal care and justify the administration of antibiotics especially to women with the premature rupture of membranes. The routine administration of antibiotics was reevaluated in the management of preterm labor. The question of optimal antibiotics remains open.

[Pregnancy and labor after combined pancreas-kidney transplantation in Czech Republic]

OBJECTIVE

To inform about the first own experiences and to present opinion on leading pregnancy and delivery after a combined pancreas and kidney transplantation.

DESIGN

Case report and review article.

SETTING

Department of Obstetric and Gynecology, 1st Medical Faculty of the Charles University and General Faculty Hospital, Prague.

RESULTS AND CONCLUSIONS

Pregnancies and deliveries after the transplantation of solid organs are not common. Mostly there are experiences with women after kidney transplantation, smaller or no experiences are with women after transplantation of other solid organs. About 25 pancreas transplantation per year are performed in the Czech republic. Two women after the combined kidney and pancreas transplantation were the first in Czech republic to get pregnant spontaneously and delivered by using a chronic immunosupressive. therapy (Prograf, Imuran, Prednison) in 2002 and 2003. These single pregnancies were led as a high-risk pregnancy in Regional Perinatology Center in collaboration with Transplant and Diabetic Center. Both pregnancies were termined from the obstetrical indication before the term by cesarean section. Both children were healthy. The pregnancy of both patients has not affected the function of the transplanted organs and development of both children has been normal.

[Threatening uterine rupture in pregnancy after previous laparoscopic myoma enucleation. Case report]

OBJECTIVE

To evaluate the negative effect of uterine myoma enucleation forcompact structure of the uterus.

DESIGN

Case report.

SETTING

Department of Obstetrics and Gynecology, 1st Faculty of Medicine, Charles University and General Faculty Hospital, Prague, Pronatal Sanatoruim, Prague

METHODS

In this study, the authors analyze their experience of the course of pregnancy in a patient who had uterine myoma enucleation with penetration to the uterine cavity and large coagulation. The pregnancy was terminated by caesarean section for the indication of prior uterine surgery and the risk of uterine rupture in 38 week of pregnancy.

CONCLUSION

This case report demonstrates the risk of uterine rupture in pregnancy after laparoscopy myoma enucleation.

[Delivery of a healthy child from pregnancy after IVF complicated hyperstimulation syndrome, phlebothrombosis and resection of uterine horn. Case report]

OBJECTIVE

To evaluate the negative effect of uterine horn resection for heterotopic pregnancy in the uterine horn in the first trimester on the course of pregnancy and labor. To point out the increased incidence of other complications in pregnancy after IVF+ET (ovarian hyperstimulation syndrome, phlebothrombosis of the pelvic veins).

DESIGN

Case study.

SETTING

Department of Obstetrics and Gynecology, 1st Faculty of Medicine, Charles University and General Faculty Hospital, Prague.

METHODS

In this study, the authors analyze their experience with the course of pregnancy of a patient who had uterine horn resection for a heterotopic uterine horn pregnancy after IVF+ET. The course of pregnancy was associated with further complications such as ovarian hyperstimulation syndrome and the resulting occurence of thrombosis in the 2nd trimester of pregnancy. The pregnancy was terminated by caesarean section for the indication of prior uterine surgery-resection of the uterine horn in the first trimester. A healthy infant was delivered.

CONCLUSION

This case study demonstrates the multiple occurrence of serious complications in pregnancy after IVF+ET, which are associated with ovarian hyperstimulation and the transfer of multiple embryos. The pregnancy was terminated with the delivery of a healthy term infant.

[Foetal ECG in the prediction of intrapartum hypoxia]

Intrapartum foetal hypoxia represents one of the most frequent causes of the hypoxia-ischemia CNS injury in newborns and it can result in the development of a permanent handicap. It often results from the underestimation of the development of the delivery by the obstetrician who conducts delivery and who is responsible for it. That is why the contemporary obstetrics is using new instruments, enabling to evaluate objectively the development of the intrapartum foetal hypoxia. The praxis consequently introduced cardiotocography (CTG), foetal pulse oximetry (FpO2) and recently new methods for evaluation of ST interval in foetal ECG- STAN. The last method has the highest specificity for prediction of the foetal hypoxia and it properly signalises the development of the metabolic foetal acidosis, which threatens the foetus during delivery and which can impair the vital organs. Foetal myocardium sensitively responds to the release of stress hormones, to the development of anaerobic metabolism and to the increase of potassium levels. The development of hypoxia manifests in ECG as a subsequent rise of T wave, elevation of T/QRS segment and as a significantly biphasic ST interval. The last sign indicates serious state of the foetus in utero accompanied with metabolic acidosis.

[Analysis of present diagnostic methods of intrapartum fetal hypoxia]

OBJECTIVE

To evaluate specificity of present diagnostic methods of intrapartal fetal hypoxia (cardiotocography--CTG, fetal pulse oxymetry--FpO2, ST-ECG analysis).

DESIGN

A prospective study.

SETTING

Gynecology-Obstetrics Clinic, 1st Medical Faculty and General Faculty Hospital in Prague.

METHODS

The results of synchronic fetus monitoring by means of CTG, FpO2 and STAN-ST 21 were followed in 53 mothers with a risk and pathological delivering of birth in the period of April 2003 to March 2004. The study investigated, which of the methods provided the best prediction of the intrapartal fetal hypoxia. The statistical evaluation (p-mark test and Mc Namara test) was based on the assessment of correct or incorrect prediction of the Apgar score values in the first minute after birth, pH in umbilical artery and the lactate level. We also investigated results of three methods during postpartum depression, turbid or mushy amniotic fluid and the way the individual methods were made useful in indication for ending the delivery.

RESULTS

In comparison with CTG there was a statistically significantly higher specificity in FpO2 and STAN in the evaluation of Apgar score in the newborn in the first minute after birth, FpO2 (p=0.007) and STAN-ST (p<0.001), in the determination of pH (a) from umbilical blood FpO2 (p=0.029) and STAN (p=0.001) and the occurrence of postpartum depression of the newborn in minute 30-60 after birth FpO2 (p=0.019) and STAN (p=0.0005). The changes in lactate level in umbilical blood were better predicated by STAN (p=0.001). FpO2 evaluated the changes in the same way as CTG. The threatening hypoxia in strongly turbid or even mushy amniotic fluid was correctly evaluated by STAN only (p=0.002). The FpO2 evaluation was not statistically significant. There was not any statistically significant difference in the indication of operation for ending the delivery among the individual methods.

CONCLUSIONS

The results univocally demonstrated that the used of other method for diagnosis on intrapartal fetus hypoxia--Fetal pulse oxymetry and ST--analysis of ECG of the fetus give more precision to the diagnosis. The introduction of these methods requires a correct interpretation and the effort of the obstetrician to use these methods in clinical practice.

[Vaginal infections screening in pregnancy]

Preterm birth before the 37th gestational week is most frequently caused by infection. The agents are aerobic and anaerobic bacteria. Infection usually ascends from the vagina. Microorganisms entering the choriodecidual space induce pro-inflammatory cytokines, which trigger prostaglandin synthesis and contraction activity of the uterus. Cytokines can also release proteases, which cause premature outflow of the amnionic fluid. Screening of vaginal infections is indicated in all cases of imminent preterm parturition and in the group of risk pregnancies. Screening on Streptococcus B is indicated to all pregnant women in the gravidity weeks 35 to 37. Beside streptococcus infections with the risk of disease of the neonate being 2 to 3 per 1000 of vital newborns, bacterial vaginosis caused by Gardnerela vaginalis is frequently diagnosed. Effective treatment of symptomatic cases of the advanced pregnancy is five days long administration of Metronidazol or Clindamycin--vaginal crème. Another frequent cause of the preterm birth is chlamydial infection. The best contemporary treatment is Azitromycine for five days. Therapy of women without symptoms of the imminent preterm parturition does not decrease its occurrence. It is therefore not recommended as well as is not recommended the therapy of pregnant women with asymptomatic bacterinuria. Beside the classical cultivations, detection of antibodies, DNA analysis and serum infection markers (leucocytes, C-reactive protein), detection of pro- inflammatory cytokines in the serum and in the vaginal secret (IL-6, IL-8, TNFalpha etc.) are used to diagnose vaginal infections.

[The May-Hegglin anomaly in pregnancy. 2 case reports]

TYPE OF STUDY

Case report.

SETTING

Obstetrics and Gynecology Department, 2nd Medical Faculty Charles University and Faculty Hospital Motol, Department of Hematology and blood transfusion, Obstetrics and Gynecology Department, 1st Medical Faculty Charles University and General Faculty Hospital, Prague.

METHODS

The authors present two cases of pregnant women with May-Hegglin anomaly. This rare hereditary trombocytopenia is characterized with the presence of megathrombocytes and typical basophilie inclusions (Dahli's inclusions) in granulocyte cytoplasma in blood count. Clinically, there are possible haemmorrhagic manifestations in this anomaly [13]. The course of pregnancy was uncomplicated in both cases. The values of thrombocytes fluctuated between 22-34 x 10(9)/l and 17-27 x 10(9)/l respectively. The response on the corticosteroid administration was minimal. The pregnancy was terminated with caesarean section in general anesthesia in both cases. The indication in the first case was, after the neonatologist consultation with hematologist on duty, the anomaly itself. In the second case it was primarily decided to conduct the labor vaginally. It was necessary to start the induction of labor for the development preeclamptic signs. This prostaglandin induction was unsuccessful and therefor was the labor also terminated with s.c. Both delivered neonates were in good condition without clinical or lab signs of the disease. The neonate in the second case was of borderline trophicity. The s.c. were secured with transfusions of thrombocytes and carried out without any complications in both cases. The blood losses were 400 and 700 ml without necessity of erythrocyte transfusions. The postoperative course was also uncomplicated in both cases. Both women with their children were released from hospital on the 6th postoperative day.

CONCLUSION

There are about 20 published papers of authors describing pregnancy with this rare anomaly. The efforts of haemmorrhage are very rare, the course of pregnancy is usually not disturbed [7, 8, 9, 11]. Some authors alert on possible higher risk intrauterine growth restriction [4]. The risk of fetal hemorrhage is from all available, data also small and there is no need of prenatal invasive investigation (cordocentesis) [11]. The mode of delivery depends only on the obstetrics and indications, vaginal labor is not associated with higher risk for the fetus [2, 3, 5, 6, 10]. The treatment with corticosteroids or immunoglobulins in cases when the clinical symptomatology appear is only little effective, administration of thrombocytes transfusions are useful [8, 9]. When the anesthesia is necessary, general anesthesia is preferred because of higher risk of local haemmorrhage complications in cases of epidural or spinal analgesia [10, 14].

[Successful postponement of delivery in twin pregnancy]

OBJECTIVE

Description of twin pregnancy after IVF preterm rupture of membranes of fetus A in 22nd gestational week. Abortion of fetus A and successful delayed delivery of twin B.

DESIGN

Case report.

SETTING

Obstetrics and Gynecology Department, 2nd Medical Faculty Charles University and Faculty Hospital Motol, Obstetrics and Gynecology Department, 1st Medical Faculty Charles University and General Faculty Hospital, Prague.

METHODS

Patient A. S. 34 years old, admitted to the hospital in 23rd gestational week with preterm rupture of membranes of fetus A, after appearing spontaneous uterine contractions terminated the abortion of fetus A. The uterine contractions stopped with toxolytics and after one week of expectation interval the cerclage suture of cervix was performed. The following course of pregnancy was protected with antibiotics and 48 hours toxolysis with beta mimetics. The pregnancy continued without any serious complications till 37th gestational week, when infectious markers elevated. Cerclage suture was taken away and after 12 hours interval the labor started. The labor was terminated with s.c. because of imminent fetal hypoxia.

CONCLUSION

After the abortion of twin A we succeeded to delay delivery interval for 4 months. The borderline mature neonate was born in good clinical condition and survived without any serious complications.

[Pregnancy in myelodysplastic syndrome]

OBJECTIVE

Evaluation of the influence of myelodysplastic syndromee (MDS) on the course of pregnancy and delivery.

DESIGN

Case report.

SETTING

Gynecological and Obstetric Department 1st Medical Faculty Charles University and General Faculty Hospital, Prague.

SUBJECTS AND METHODS

The authors analyze their experience with the course of pregnancy and delivery in a patient with MDS and refractory anaemia who was treated on account of the disease for several years before pregnancy in the Institute of Haematology and Blood Transfusion. Pregnancy was not associated with progression of the basic disease and complications which developed during pregnancy were not associated with MDS. Pregnancy was terminated in this patient on account of preeclampsia gravis per sectionem caesarean by delivery of a healthy foetus.

CONCLUSION

The example draws attention to a serious haematological disease while during pregnancy and delivery deterioration of the basic disease was not observed.

[Disseminated intravascular coagulation syndrome and protein C]

Disseminated intravascular coagulation (DIC) is characterized by systemic activation of the haemostasis. In many instances the release of inflammatory cytokines and tissue factor trigger the system in septic or traumatic conditions. Initially, the increased activation of haemostasis can be compensated by natural inhibitor systems. As release of the triggers persists, inhibitors (e.g. antithrombin and protein C) will be consumed leading to intravascular clotting. In this process many coagulation factors, most notably fibrinogen and platelets are consumed too, resulting in a failure of haemostasis system and in a diffuse bleeding (decompensated DIC). Fresh frozen plasma, blood transfusion, and fibrinogen concentrate correct the bleeding, if needed, in the case of traumatic (obstetric) DIC. Arrest of the activated haemostasis by heparin and natural anticoagulants (antithrombin or/and protein C) is recommended, mainly in septic conditions with systemic inflammatory reactions. A case of stercoral sepsis usefully treated by recombinant human activated protein C is reported.

[The fetal ECG--ST analysis in the diagnosis of fetal hypoxia]

OBJECTIVE

Clinical tests of a new apparatus STAN S21 evaluating the foetal ECG--ST section in the diagnosis of foetal hypoxia.

DESIGN

Retrospective analysis.

SETTING

Gynaecological and Obstetric Clinic, First Medical Faculty Charles University and General Faculty Hospital, Prague.

METHOD

Within the framework of clinical tests 27 analyses were made on a apparatus STAN S21 manufactured by Swedish firm Neoventa. Contrary to hitherto implemented and published studies, in all monitored deliveries the CTG curve was evaluated as well as FpO2 and STAN. After each delivery in the neonate the Apgar score and acid-base equilibrium from the umbilical artery was evaluated. ST analysis was included mainly in case of abnormal CTG records, risk and pathological deliveries. Evaluation was divided into two groups: in one delivery was terminated by the vaginal route, in the second one by Caesarean section. For evaluation of the CTG curve the FIGO terminology was selected (intermediary-suspect) and (abnormal-pathological). For evaluation of the FpO2 pathology 30% saturation for 10 minutes was used. In STAN analysis important phenomena were evaluated by computer (increase of T wave, increase of T/QRS complex and biphasic character of ST).

RESULTS

In reduced values of the Apgar score (during the 5th minute < 8 points) and the acid-base balance from umbilical artery (pH < 7.2, BE > -8) pathological CTG records and FpO2 were present in 25%. STAN had in these instances pathological records in 50%).

CONCLUSION

ST analysis is another very effective link in the diagnosis of interpartial foetal hypoxia. Initial experience indicates, that STAN will have probably a higher diagnostic specificity than CTG and FpO2.

[Prediction of premature labor--multifactorial analysis of a prospective clinical study]

OBJECTIVE

To evaluate, which of selected anamnestic, laboratory and ultrasonographic (USG) parameters could contribute to the prediction of prematurity.

DESIGN

Prospective, observational, clinical study.

SETTING

Department of Obstetrics and Gynecology, 1st Faculty of Medicine and the General Faculty Hospital, Charles University, Prague.

METHODS

349 women with the singleton pregnancy were followed from the half of the 2nd trimester until the end of gestation. At each woman the anamnestic (age, parity, pregravid BMI, weight gain until 20th week, significant risk from patient's history, cigarette smoking, risk pregnancy symptoms until 20th week), laboratory (maternal serum concentration of AFP, hCG, and uE3/triple test/at 16th week, the blood count and ferritin concentration at 18th-20th week, bacteriological cultivation of the smear from the cervix at 34th-36th week), and USG (transvaginal cervicometry and doppler flowmetry of the uterine arteries at 18th-20th week) data were established. With the aid of one-dimensional and multi-dimensional analysis the dependence of completed gestational age and preterm delivery (before completed 37th week) on above mentioned parameters was tested.

RESULTS

314 women completed the study. We proved a significant dependence of prematurity on the following markers: risk pregnancy symptoms until 20th week (RR 2.94), abnormal triple test (RR 4.63), cultivation of pathogens from the cervix (RR 5.49), USG established cervical length (P < 0.0001), abnormal result of cervicometry (RR 19.02), both doppler parameters (RI of uterine arteries: P < 0.0001; presence of early diastolic notch: RR 2.84). The results of multi-dimensional analysis confirmed superiority of USG cervicometry in prediction of both measured outcomes.

CONCLUSION

The predictive value of some of selected anamnestic, laboratory, and USG markers of premature delivery was proved at random population of women with singleton pregnancy. The abnormal result of transvaginal USG cervicometry was the most significant predictor of prematurity. We recommend a routine performing of cervicometry (as a part of USG screening at 18th-20th week) for early selection of women with significantly increased risk of prematurity.

[Massive pulmonary embolism after delivery by cesarean section]

OBJECTIVE

To give an overview of the preventive and therapeutic measures in thromboembolic disease in association with pregnancy and delivery.

SUBJECT

Case report.

SETTING

Department of Obstetrics and Gynaecology, First Faculty of Medicine, Charles University and General Faculty Hospital, Prague.

SUBJECT AND METHOD

The surgical treatment of massive pulmonary embolism in a patient after delivery by caesarean section.

CONCLUSION

Surgical embolectomy still has its place in the treatment of pulmonary embolism in the early phase of critical cases, when thrombolysis is contraindicated, and mechanical disintegration with the catheter is unsuccessful. In such cases it is the only one possibility of saving the patient. However, prevention of thromboembolic disease remains of primary importance.

[Perinatal outcome of twin pregnancies after fertilization in vitro and after spontaneous conception]

OBJECTIVE

To compare the obstetric outcome of twin pregnancies after IVF with spontaneously conceived twins and thus determine whether IVF twins require greater care.

TYPE OF STUDY

A retrospective study.

SETTING

The Department of Obstetrics and Gynaecology, 1st Faculty of Medicine of Charles University, Prague.

METHODS

Statistical evaluation of obstetric outcome between the group of 46 twin pregnancies after IVF and 85 spontaneously conceived twins. We evaluated the following parameters: signs of abortion and premature delivery, bleeding in pregnancy, premature rupture of membranes, performed cerclage, incidence of praeclampsia, gestational diabetes mellitus and hepatopathy of the mother. Pathological ultrasound findings were also evaluated--disturbances in foetal growth and the amount of amniotic fluid. In these parameters we also evaluated the time of the first signs of their development. Further, we evaluated the type of delivery, the gestational age at delivery, birth weight, birth weight discordance and perinatal mortality.

RESULTS

We found statistically significant differences in the method of delivery--more cesarean sections in the IVF group (71.7%) than in spontaneous ones (44.7%). Another difference was the gestational age at which cerclage were performed--earlier in the IVF group (average 22.8 weeks) than in spontaneous ones (average 25.7 weeks). In the other evaluated parameters we did not find any statistically significant differences between the two groups.

CONCLUSION

In our retrospective analysis of twin pregnancies, deliveries and neonatal outcome, except for the method of delivery and time of performing cerclage, we did not find any important significant differences between the IVF and spontaneously conceived twins. However, it is necessary to remember the generally worse obstetric outcome of twin compared to singleton pregnancies.

[The spectrum of lipids in the intrauterine growth retarded fetus and in the parents]

OBJECTIVE

The aim of this study was to determine the relationship between the parameters of individual serum lipids and the degree of intrauterine growth retardation (IUGR) of the fetus. The lipid levels were compared in fetuses with IUGR and in eutrophic fetuses and it was determined in which studied variable IUGR newborns differ from healthy newborns.

METHODS

The group under study consisted of 53 pregnant women in whom IUGR of the fetus was diagnosed by ultrasound during pregnancy. The control group consisted of 26 women who gave birth to eutrophic newborns. The cases in the control group were chosen by the method of matched control so that the results could be statistically evaluated in both groups at the same gestational age and at the same maternal age. In both groups blood samples from the umbilical cord were taken after delivery and the whole spectrum of lipid levels were evaluated (cholesterol-CH, triglycerides-TGA, high-density lipoprotein--HDL, low-density lipoprotein--LDL, Lp(a) lipoprotein, and apolipoproteins-ApoB, ApoAI, ApoE). The same parameters were evaluated in maternal and paternal blood samples. In several cases, intrauterine lipid levels of the fetus were determined by cordocentesis. The incidence of hyperlipoproteinemia in the families of both groups was surveyed.

SETTING

Department of Obstetrics and Gynaecology, 1st medical Faculty, Charles University, Prague.

RESULTS

There was a significant incidence of hyperlipoproteinemia in the families of the mothers in the group studied (chi-square test: p < 0.001). In the mothers of the groups studied, there were statistically significant higher levels of HDL, LDL, and Lp(a) in comparison to the mothers in the control group. A significant dependence was determined between the levels of ApoAI and Lp(a) of the mothers and newborns. In the regression analysis of the dependence of lipid levels on the birth weight of the newborns, a statistical correlation was determined for the values of ApoB and Lp(a).

CONCLUSION

The more increased the intrauterine growth retardation of the fetus and the lower its birth weight in relation to its gestational age, the higher its lipid levels, specifically apolipoproteins. Apolipoproteins are under genetic control and present a genetic risk for changes in the metabolism of cholesterol, hemocoagulation, and cardiovascular disease in adulthood.

[Comprehensive treatment of ileofemoral thrombosis at the end of pregnancy with cesarean section in combination with thrombectomy]

Acute deep ileofemoral thrombosis was treated at the end of pregnancy in four pregnant women. A multidisciplinary approach was selected. During a single anaesthesia the team of obstetricians and neonatologists made a Caesarean section followed by thrombectomy with a Fogarty catheter. This operation was performed by a team of specialists in cardiovascular surgery. Two women developed rethrombosis: one woman on the following day, the second one two weeks after surgery. In both instances repeated thrombectomy was performed. In one woman the cause of ileofemoral thrombosis was malignant disease of the uterine cervix II and this woman is, after oncological treatment, in a serious condition due to the basis disease. The remaining three women were repeatedly subjected to phlebographic examinations and complete patency of the deep vascular system was found. These women are free from subjective and objective complaints and can look after their children. Pregnant women where a serious ileofemoral thrombosis was diagnosed had high fibrinogen and thrombocyte levels. In two women an AT III deficiency was found. There was also a high cholesterol level and positive antiphospholipid antibodies. Thrombectomy has according to the authors' experience very good results when the operation is implemented within 72 hours after initial symptoms. This procedure reduces the risk of chronic venous insufficiency.

[Micronized progesterone in the treatment of imminent necrosis of a myoma during pregnancy. Ultrasound changes during treatment]

In two pregnant primigravidae with signs of imminent necrosis of a myoma treatment with micronized progesterone, preparation Utrogestan, was successful. After oral and vaginal treatment with a dose of 300-600 mg/day the symptoms receded within several days. Complete regression of symptoms was recorded within one to two weeks. Both women terminated their pregnancy during the 37th-38th week and were delivered of healthy infants. One women gave birth to the infant by Caesarean section, the other one per forcipem Shutte. During surgery on the myoma no signs of degeneration were found and it was left in situ. Progesterone treatment prevented in both women surgery on account of an acute abdomen. Treatment was monitored by ultrasonographic assessment of the flow in afferent vessels of the myoma. This measurement revealed marked changes, i.e. an increased flow. At the onset of treatment there was a small difference between the indices of pulsatility (PI) and resistance (RI). This difference increased gradually, and also the difference between systole and diastole in the investigated vessels increased. This led to an increased flow and blood supply of the myoma. Thus evidence can be provided that large doses of natural progesterone have a favourable effect on the blood vessels and increase the blood flow in the vascular wall at the site of the myoma.

Relation between concentration of lead, zinc and lysozyme in placentas of women with intrauterine foetal growth retardation

Intrauterine foetal growth retardation (IUGR) implies increased risk of morbidity and mortality of the newborn. Aetiology of intrauterine retardation is probably multifactorial and may include maternal infection, malnutrition, placental dysfunction, hypertension, toxaemia, smoking, professional and environmental exposure. The work concentrates on the lead, zinc and lysozyme levels in blood and placental tissues of 50 females in the IUGR group and 43 females from a control group. Statistically significant differences in zinc and lead levels between the compared group were found. The IUGR group had lower zinc and higher lead levels. A significant negative correlation of zinc and lead levels was observed. We found a statistically significant relationship between lead levels in placental tissues and the age of the pregnant women. Higher age is associated with higher lead levels in placental tissue, whereas zinc levels decrease. In placental tissues of pregnant females of the IUGR group higher lysozyme levels were found. On the basis of the discussed results the authors recommend zinc supplementation during the pregnancy.

[The HELLP syndrome]

The HELLP syndrome is a serious complication of pregnancy, found most frequently in conjunction with severe preeclampsia. The incidence of this disease in preeclampsia is between 2 and 12%. The diagnosis is based on typical laboratory findings, i.e. haemolysis--H, elevated liver enzymes--EL and a low-platelet count--LP. Haemolysis is defined as microscopic finding of an abnormal peripheral blood smear, elevated total bilirubin above 1.2 mg/dl and elevated lactate dehydrogenase above 40 mukat/l. Transaminases (AST above 4.2 mukat/l) are also elevated. For HELLP a low platelet count is typical (number of thrombocytes less than 100,000 mm3). The symptoms include above all pain in the epigastrium, in the right subcostal area, nausea and vomiting. Non-specific symptoms resembling viroses are lassitude, general weakness, headache and fatigue. A correct differential diagnosis and early assessment of the diagnosis are decisive for starting treatment which can prevent the development of serious complications such as disseminated intravascular coagulopathies and hepatorenal failure. Treatment of the HELLP syndrome is symptomatic with the objective to stabilize the general condition of the mother, improved haemodynamic conditions and the impaired haemocoagulation. A very important therapeutic step is early termination of pregnancy which depends on ther mother's condition and the condition of the foetus with regard to gestational age.

The invasive prenatal diagnosis in perinatal centre

Three main methods of prenatal diagnosis (Amniocentesis AMC, Chorionic villi sampling CVS and Cordocentesis FBS) have been used in Perinatal Centre of Central Bohemia. The chromosomal abnormalities in a group of 3,098 patients have been detected in 1.4% of fetuses. The inherited disorders were diagnosed using DNA analysis and biochemical examination of amniotic fluid. X-linked diseases in a group of 68 patients in 30.8% of fetuses have been diagnosed and inborn error of metabolism in a group of 29 indicated patients in 17.2% of fetuses were diagnosed. The incidence of fetal losses before 28th week of gestation was 0.4%.

Prenatal determination of fetal RhD (rhesus positive) type by an amplification of DNA

Examination of RhD genotype (Rhesus D gene) from amniotic cells (or chorionic villi cells) by PCR amplification of DNA can be done at early stage of pregnancy. Due to some missing exons in the Rh partial D variant (e.g. DVI), it is necessary to use different PCR systems to get relevant results. The localization of primers in our three PCR systems is on the different exons (10, 7, and 4 + 5). The advantage of PCR technique is prenatal detection of RhD of fetus from nonerythrocytes suspension (e.g. from an amnion fluid cell sediment) in comparison to a "standard" haemagglutination serological technique which uses blood erythrocytes only. The possibility of this technique to distinguished the heterozygous (D/d) or homozygous (D/D) fathers can help the clinicians in decisions about the management of further prevention of the hemolytic disease of newborn.

Biochemical screening of congenital developmental abnormalities using determination of fetoplacental antigens

In a prospective study of screening of maternal serum levels of alpha-1-fetoprotein (MS AFP) and trofoblast-specific beta-1-glycoprotein (MS SP1) were examined in samples from pregnant women between the 16th and 18th week of pregnancy. We detected 8 fetuses with chromosomal aberation, 8 fetuses with neural tube defects and 10 fetuses with inborn cardial defects. Our study confirms higher MS SP1 levels in women with fetuses with chromosomal aberation, while MS AFP's tendency is to decrease. When combining MS SP1 + MS AFP + age of mother (over 35), 75% of fetuses with chromosomal aberation were detected. In women with neural tube defect 75% fetuses were detected by MS AFP + MS SP1 combination.

[Relation of metal and lysozyme levels in the placentas of women with intrauterine fetal growth retardation]

In a group of women who gave birth to a foetus with marked growth retardation and 27 women who were delivered of eutrophic neonates the lead, cadmium, zinc and lysozyme levels in placental tissue were assessed. The investigation revealed the following results: the lead level was in the investigated group significantly higher than in the control group (15.24 ng/g vs. 11.31 ng/g). Conversely the zinc levels were significantly higher in the control group (20.52 micrograms/g vs. 14.3 micrograms/g of placental tissue). The lead, cadmium and lysozyme values rise with the womens' age in the examined placentae, while the zinc levels decline. With the elevated zinc level the lead and cadmium content in the placentae of the exposed group declines. The lysozyme values increase along with the rise of all investigated elements with the exception of zinc, where the dynamics are reversed. The findings justify the recommendation of zinc supplementation during pregnancy.

[Anti-phosphatidylserine antibodies in women with reproductive disorders]

Antiphosphatidylserine antibodies (APSA) belong to the heterogeneous population of antiphospholipid antibodies (APA) which are oriented above all against negatively charged phospholipids. The presence of APA in women is closely associated with repeated miscarriages and other complications during pregnancy. The most frequently detected specific antibodies in these patients are autoantibodies against cardiolipin and phosphatidylserine (PS). In a group of 84 pregnant women where within the framework of biochemical prenatal screening of inborn developmental defects serum levels of alpha-1-fetoprotein, choriogonadotropin and trophoblast specific beta-1-glycoprotein were examined as well as in 22 women treated for primary sterility and 22 blood donors the authors assessed, using the ELISA method, antiphosphatidylserine and cardiolipin antibodies (ACA). They found an increased prevalence of APSA in all examined groups as compared with the control group of blood donors. In pregnant women the prevalence of APSA and ACA did not differ and at least one type of antibodies was detected in 20.1%. In pregnant women with positive APSA in the case-records spontaneous abortions were recorded, or imminent abortions during the present gestation or treatment on account of sterility, and in some instances also changes of foetoplacental antigen serum levels were found. It is therefore likely that the presence of APA in women may be one of the factors participating in reproductive disorders and that assessment of APSA together with APA may extend the spectrum of immunological examinations, in particular in sterile and infertile women.

[Results and complications of intrauterine transfusion in fetuses with and without hydrops]

The group comprises 50 intrauterine transfusions in 15 patients with a severe form of foetal erythroblastosis. The authors describe the results and complications in hydropic and non-hydropic foetuses, diagnosed by ultrasound before transfusion treatment was started. In the group of non-hydropic foetuses the success rate of transfusion treatment was 90.1% and 10 neonates were born with a mean weight of 2030 g. The mean gestation period was 34 weeks. From four hydropic foetuses it proved possible to save only one, the success rate in this group was only 25%. The mean weight of hydropic foetuses was 1650 g and the gestation period at delivery 29 weeks. The rate of Caesarean sections in both groups was as high as 80%. Serious complications included thrombosis of the umbilicus, thromboembolism of the a. axillaris in a hydropic neonate and acute hypoxia of the foetus after transfusion. Four of six serious complications were recorded in hydropic foetuses.

[Is chorionic biopsy a dangerous and outdated method?]

The authors evaluated the risk of chorion biopsy used within the framework of prenatal diagnosis of the foetus. The incidence of abortions following transabdominal CVS (0.6%) did not differ from abortions after amniocentesis in the second trimester (0.5%). In a group of 1002 diagnostic biopsies of the chorion the authors did not record in the born infants reduction deformities of the extremities. Chorion biopsies were performed in 98% between the 10th and 12th week of gestation. The incidence of mosaicism--1.59%--was not significantly higher than reported in the literature. The authors recommend: to increase the size of the sample of chorion tissue by the use of a manual aspirator, the use of a 30 ml plastic syringe or the double needle method. They consider CVS a suitable method which serves the diagnosis of IUGR and the prenatal diagnosis of the foetus before the 20th week of gestation when cordocentesis involves risk.

Prenatal biochemical diagnostics of inborn developmental defects

Screening of pathological pregnancies with the use of biochemical markers determined in maternal serum is now widely accepted as a useful procedure. In our experience, the main contribution is a finding of abnormal values of one or more of the markers, which will advise gynecologist upon a possibility of a risk pregnancy.

[SP1 serum levels in pregnancy with Rh isoimmunization]

The authors examined in 37 pregnant women hospitalized on account of Rh incompatibility during the second and third trimester 71 serum specimens for levels of trophoblast specific beta 1-glycoprotein (SP1), using the method of simple radial immunodiffusion. In the group of 16 women with Rh incompatibility whose pregnancy terminated by delivery of a normal neonate, in 22% the SP1 levels were higher than 1.5 x the median value for the given gestation week (MoM). In 17 pregnancies where the foetus suffered from haemolytic disease the SP1 levels were higher than 1.5 MoM in 45% of the examined foetuses. Markedly elevated SP1 levels of 2.3 and 2.4 MoM were recorded in two pregnancies with hydrops of the foetus.